"At length Je´hu came to Jez´re·el, and Jez´e·bel herself heard of it. And she proceeded to paint her eyes with black paint and do her head up beautifully and to look down through the window." (2 Kings 9:30)
The Bible mentions makeup here and it's a bad person that puts it on, and a death occurs. Birthdays are forbidden since someone is killed at the two birthdays in the Bible. The cross reference in the NWT at 2 Kings 9:30 points to 1 Peter 3:3.
"And do not let YOUR adornment be that of the external braiding of the hair and of the putting on of gold ornaments or the wearing of outer garments." (1 Peter 3:3)
I wonder why they didn't make this into a rule.